Overview
Publication
Vaccine. 2009 Nov 23; 27(50):7080-6.
PubMed ID: 19786145
Title
A novel HIV T helper epitope-based vaccine elicits cytokine-secreting HIV-specific CD4+ T cells in a Phase I clinical trial in HIV-uninfected adults
Authors
Jin X, Newman MJ, De-Rosa S, Cooper C, Thomas E, Keefer M, Fuchs J, Blattner W, Livingston BD, McKinney DM, Noonan E, Decamp A, Defawe OD, Wecker M; NIAID HIV Vaccine Trials Network
Abstract
A Phase I human vaccine trial of a novel polypeptide vaccine of HIV T helper epitopes (EP-1043) and a DNA vaccine of HIV CTL epitopes was conducted in 84 healthy adult volunteers. The vaccine immunogenicity was assessed by an intracellular cytokine staining assay for IL-2, IL-4, TNF-alpha and IFN-gamma. Sixty eight percent (32/47) of subjects had a positive CD4+ T response after receiving two vaccinations of the polypeptide vaccine. The responding CD4+ T cells made various combinations of IL-2, IL-4, IFN-gamma, and TNF-alpha. The study demonstrated that the EP-1043 vaccine is safe, well-tolerated, and immunogenic.
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